#!/bin/sh
# Copyright (C) 2008 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#
# tests basic functionality of read-ahead and ra regressions
#

test_description='Test read-ahead functionality'

. ./test-utils.sh


get_lvs_() {
   lvs --units s --nosuffix --noheadings -o $1 "$vg"/"$lv"
}

check_lvs_() {
   case $(get_lvs_ $1) in
    *$2) true ;;
    *) false ;;
   esac
}

aux prepare_vg 5

#COMM "test various read ahead settings (bz450922)"
lvcreate -n "$lv" -l 100%FREE -i5 -I256 "$vg"     
ra="$(get_lvs_ lv_kernel_read_ahead)"
test "$(( ( $ra / 5 ) * 5 ))" -eq $ra
lvdisplay "$vg"/"$lv"                             
lvchange -r auto "$vg"/"$lv" 2>&1 | grep auto     
check_lvs_ lv_read_ahead auto                                  
check_lvs_ lv_kernel_read_ahead 5120                           
lvchange -r 400 "$vg/$lv"                         
check_lvs_ lv_read_ahead 400                                   
lvremove -ff "$vg"